Mitsubishi MELSEC iQ-F, Руководство пользователя

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APPX
Appendix 4 Buffer Memory Areas
127
A
■
Buffer memory address
The following shows the buffer memory address of this area.
■
Status of Input signal error detection flag/disconnection detection flag
• When an analog input value out of the range specified in Input signal error detection setting value is detected, Input signal
error detection flag corresponding to each channel turns to Input signal error (1).
• If a disconnection is detected by the disconnection detection function, disconnection detection flag, which corresponds to
the channel where the disconnection is detected, turns to disconnection detection (1).
• When an error is detected in any channel where the conversion and the input signal error detection are enabled, 'Input
signal error detection signal' (Un\G69, b12) turns on.
• If an error is detected even in one channel, of the channels where conversion is enabled and disconnection detection is
enabled, 'Disconnection detection signal' (Un\G69, b6) turns on.
■
Clearing Input signal error detection flag/disconnection detection flag
Clearing input signal errors detection flag/disconnection detection flag differs depending on Input signal error detection/
disconnection detection auto-clear enable/disable setting. (When turning off
→
on
→
off, Error clear request (Un\G70, b15) the
flag is cleared regardless of the setting.)
When Input signal error detection/disconnection detection auto-clear enable/disable setting is set to Enable (0)
• When an analog input value falls within the normal range, Normal (0) is stored in the corresponding bit of 'Input signal error
detection flag/disconnection detection flag' (Un\G28).
When Input signal error/disconnection detection auto-clear enable/disable setting is set to Disable (1)
• When an analog input value falls within the normal range, if turning off
→
on
→
off ‘Error clear request’ (Un\G70, b15), Normal
(0) is stored in the corresponding bit of 'Input signal error detection flag/disconnection detection flag' (Un\G28).
• Turning off
→
on
→
off 'Operating condition setting request' (Un\G70, b9) allows the flag to be cleared.
Conversion completed flag
The conversion status can be checked.
■ Buffer memory address
The following shows the buffer memory address of this area.
■
The status of Conversion completed flag
When the first conversion is completed in the channel where conversion is enabled, the flag turns to Conversion completed
(1). Upon completion of the conversion of all the channels where conversion is enabled, 'Conversion completed flag' (Un\G69,
b14) turns on.
■
Clearing Conversion completed flag
Turning off → on → off 'Operating condition setting request' (Un\G70, b9) turns the flag back to the default (During conversion or
unused (0)), and when the first conversion is completed, the flag turns to Conversion completed (1) again.
Buffer memory name CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
Input signal error detection flag/disconnection detection flag 28
(1) 0: During conversion or unused, 1: Conversion completed
(2) The values of b8 to b15 are fixed to 0.
Buffer memory name CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
Conversion completed flag 42
Conversion completed flag (in FX2N allocation mode function) 124
0 0 0 0 0 0 0 0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b0 b1 b2 b3 b4
(1) (2)